Don’t think it’s her only goal though.
Recall that she sacked herself for strategic reasons not that long ago, and she could do so again if she wished (the air of incompetence that might attach to her if it was genuinely because she’d fluffed up email security or somesuch wouldn’t do so, because everyone would know, as they did last time, that the advertised reason had nothing to do with it).
So for my money, getting sacked is fine by her eventually, but she wants to own the far right territory in the next phase, and that’s what she’s laying the groundwork for. Being sacked at some point is just the cherry on top. If she gets to keep doing and saying things like this for a while before Sunak sacks her, she’ll not be able to believe her luck at having such a pathetic boss.